Condensed Consolidated Balance Sheets - Parenthetical - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Details
Preferred Stock, Par or Stated Value Per Share	$ 1.00	$ 1.00
Preferred Stock, Shares Authorized	100,000	100,000
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par or Stated Value Per Share	$ 1.00	$ 1.00
Common Stock, Shares Authorized	23,000,000	23,000,000
Common Stock, Shares, Issued	18,625,458	18,620,508
Common Stock, Shares, Outstanding	14,908,517	17,102,525
Treasury Stock, Shares	3,716,941	1,517,983